Canon Applies for 135mm f/2 Patent

[Maximilian]

You are not really going to see much in patent itself. you need to put in the glass data etc into a simulation/design software like Zemax then you'll get a result, where you'll get all those MTFs and aberrations.
Unfortunately the softwares are too expensive for me so I don't really know how to use them.

So this means you just make assumptions?
Not much more then than I do - knowing what Canon did in the past.
So maybe you and I better wait for the "real" glass, shouldn't we?

 

[f119a]

So this means you just make assumptions?
Not much more then than I do - knowing what Canon did in the past.
So maybe you and I better wait for the "real" glass, shouldn't we?

It's much better than assumption because manufactures uses the same software when they design something. I assume they wouldn't bother building a test lens if the result looks bad even on paper (to save cost of development). Simulation results of 'real lenses' seem consistent with their shooting performance too.
And result like bokeh is pretty straightforward I think.

↑ A example: Tamron 70-180 f/2.8 on Tele end
You just need to set your own reference lens for "good", "acceptable" and "bad" performance.

 

[Maximilian]

It's much better than assumption because manufactures uses the same software when they design something. I assume they wouldn't bother building a test lens if the result looks bad even on paper (to save cost of development). Simulation results of 'real lenses' seem consistent with their shooting performance too.
And result like bokeh is pretty straightforward I think.
...
↑ A example: Tamron 70-180 f/2.8 on Tele end
You just need to set your own reference lens for "good", "acceptable" and "bad" performance.

But you don't have specific results of THAT Canon lens, do you?

 

[f119a]

But you don't have specific results of THAT Canon lens, do you?

Someone did the simulation and all kinds of aberations are low enough.
If you need help reading the rayfan charts: https://www.handprint.com/ASTRO/ae4.html

maximum scale is 20μm

 

[Maximilian]

Someone did the simulation and all kinds of aberations are low enough.
If you need help reading the rayfan charts: https://www.handprint.com/ASTRO/ae4.html
View attachment 202811
maximum scale is 20μm

Thanks for sharing. I cannot read out from the graphics that these really are from that new Canon design, but I'll believe you, that this is not from any other lens
Sharing the source would be nice next time.